TechnicalGIS

#NO2

2 posts

Tutorial Python Part 2 of 2

Kriging in Python with PyKrige: IDW vs ordinary kriging of UK NO₂ monitoring data

A practical spatial interpolation tutorial in Python: download real 2025 NO₂ annual means from the UK AURN network, fit spherical, exponential and Gaussian variograms, run ordinary kriging with PyKrige, compare it with inverse distance weighting, score both with leave-one-out cross-validation, map the kriging variance and add Sentinel-5P satellite NO₂ as a covariate.

Intermediate 16 min read

Tutorial Python Part 1 of 2

Sentinel-5P NO₂ in Python: mapping air pollution from TROPOMI over the UK and north-west Europe

Map nitrogen dioxide air pollution from Sentinel-5P TROPOMI Level-2 data in Python: stream a full year of orbits from the Planetary Computer, apply the qa_value > 0.75 filter, grid swaths to a regular raster, build monthly and seasonal composites, rank cities and measure the weekend drop, with an honest explanation of what a tropospheric column is.

Intermediate 17 min read